# total = 0
#
# for x in range(1, 101):
#     total += x
#
# print(total)

# print("Hello\nWorld!")
# print("Hello\tWorld!")
# print("Hello\rWorld!")
# print("This is a backslash: \\")
# print("This is a single quote: \'")
# print("This is a double quote: \"")

# 编写一个方法  checkPrime(num)
# 检查这个数时否是质数
# 如果是质数饭盒True
# 不是质数返回 Talse